Center buttons

Due to computer problems, I was a late switcher to Blender 2.5, so I’m still having some trouble finding things, in this case, the “Center” Center Ne" and Center Cursor" buttons that were previously in the editing panel in Blender 2.49. Searching Blender with the space bar yielded no relevant results, and I can’t seem to find the buttons anywhere in the GUI. Can anyone tell me where I can find them?

Shift+Ctrl+Alt+C. Search for origin.


Thank you Richard!